Chromated Copper Arsenate (CCA) Wood Preservatives

Chromated copper arsenate (CCA) wood preservatives contain chromium, copper and arsenic. Pressure-treated wood containing CCA is no longer used in most residential settings. The chemicals in CCA-treated wood have been shown to leach into the surrounding environment and can transfer to the skin when people touch the wood. CCA residues on the skin typically result in minimal exposure. However, eating, smoking or children's hand-to-mouth activity can lead to ingestion of the chemicals. Long-term exposure to arsenic can increase the risk of cancer over a lifetime.

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